Every 50 Hours Of Operation - Yanmar BY Series Service Manual

PERIODIC MAINTENANCE
11. Fill with new engine oil. NOTICE: NEVER mix
different types of engine oil. This may adversely
affect the lubricating properties of the engine
oil. NEVER overfill. Overfilling may result in
white exhaust smoke, engine overspeed or
internal damage.
12. Perform a trial run and check for oil leaks.
13. Approximately 10 minutes after stopping the
engine, remove the oil dipstick and check the oil
level. Add oil if the level is too low.
Checking the Shift Cable Adjustment
Refer to the appropriate drive or gear manual for
the correct procedure.
Adjusting the Propeller Shaft Alignment (If
Equipped with Marine Gear)
The flexible engine mounts are slightly compressed
during initial engine operation and may cause
misalignment between the engine and the propeller
shaft.
4-10

Every 50 Hours of Operation

After you complete the initial 50 hour maintenance
procedures, perform the following procedures every
50 hours or monthly thereafter.
• Checking Seawater Filter (If Equipped) and
Inlet
• Checking the Air Intake Pipes
• Checking Battery Electrolyte Level
(Serviceable Batteries Only)
Checking Seawater Filter (If Equipped) and
Inlet
Refer to boat builder's literature for information on
the seawater filter.
Checking the Air Intake Pipes
Check the air intake system for damage or wear.
Checking Battery Electrolyte Level
(Serviceable Batteries Only)
WARNING! Fire Hazard. ALWAYS turn off the
battery switch or disconnect the negative (-)
cable before inspecting the electrical system.
Failure to do so could cause short-circuiting
and fires. ALWAYS disconnect the negative (-)
battery cable first. An accidental short-circuit
may cause damage, fire and / or personal injury.
ALWAYS connect the negative (-) battery cable
(back onto the battery) LAST.
WARNING! Fire Hazard. Keep the area around
the battery well-ventilated, paying attention to
keep the battery away from any fire source.
During operation or charging, hydrogen gas is
generated from the battery and can be easily
ignited.
WARNING! Exposure Hazard. Make sure your
eyes and skin do not come in contact with the
fluid. The battery electrolyte is dilute sulfuric
acid and causes severe acid burns. If you come
in contact with electrolyte, wash and rinse it off
immediately with a large amount of fresh water
and baking soda.
© 2009 Yanmar Marine International
Periodic Maintenance Procedures
BY Service Manual